Pro iOS Persistence · Using Core Data by Privat, Michael -- Read -- Imperial Library of Trantor

Index

Cover Title Copyright Dedication Contents at a Glance Contents About the Authors About the Technical Reviewers Acknowledgments Introduction Chapter 1: Touring Core Data

What Is Core Data? Core Data Components Creating a New Core Data Project Creating the Project Touring the Core Data Components Initializing the Core Data Components Creating a Managed Object Model Adding Some Objects Viewing the Data Adding Core Data to an Existing Project

Creating a Core Data-less Application Adding the Core Data Framework Adding a Managed Object Model Adding and Initializing the Core Data Stack Creating the Object Model Adding Objects to PersistenceApp

Wrapping Up

Chapter 2: Building Data Models

Designing Your Database Relational Database Normalization Building a Simple Model

Entities Attribues Key-Value Coding Generating Classes Relationships

Storing and Retrieving Data

Inserting New Managed Objects Retrieving Managed Objects Predicates Fetched Properties

Notifications

Notification upon Creation Notification upon Fetch Notification upon Change Registering an Observer Receiving the Notifications

Conclusion

Chapter 3: Advanced Querying

Building WordList

Creating the Application Building the Data Model Creating the User Interface Loading and Analyzing the Word List Getting a Count Displaying the Statistics

Querying Relationships Understanding Predicates and Expressions

Viewing Your SQL Queries Creating Single-Value Expressions Creating Collection Expressions Comparing Expressions Using Different Predicate Types Using Different Comparison Modifiers Using Different Options Adding It Up: Using Compound Predicates Aggregating Using Subqueries Sorting

Summary

Chapter 4: Attending to Data Quality

Seeding Data

Using the Seed Store Updating Seeded Data in Subsequent Releases

Undoing and Redoing

Undo Groups Limiting the Undo Stack Disabling Undo Tracking Adding Undo to BookStore Experimenting with the Undo Groups

Dealing with Errors

Handling Core Data Operational Errors Handling Validation Errors Handling Validation Errors in BookStore Implementing the Validation Error-Handling Routine Summary

Chapter 5: Integrating with the User Interface

Displaying Table Data with NSFetchedResultController

Creating a Fetched Results Controller Creating the Fetched Results Controller Delegate

Storing Images

Adding Screenshots to CoreDump Verifying the External Storage

Searching the Fetched Results in the Table

Adding the Search Controller Retrieving the Search Results Displaying the Search Results

Conclusion

Chapter 6: Versioning and Migrating Data

Versioning Lightweight Migrations

Migrating a Simple Change Renaming Entities and Properties

Using a Mapping Model

Understanding Entity Mappings Understanding Property Mappings Creating a New Model Version That Requires a Mapping Model Creating a Mapping Model Migrating Data Running Your Migration

Custom Migrations

Making Sure Migration Is Needed Setting Up the Migration Manager Running the Migration

Summary

Chapter 7: Transforming and Encrypting Data

Using Transformable

Creating the Project and Adding Core Data Creating Taps Creating the View and Displaying the Taps Hey, Wait a Minute! How Did My Color Transform?

Encrypting Data

Creating the Project and Setting Up the Core Data Model Performing the Encryption and Decryption Setting Up the Detail View to Edit a Note Prompting For and Verifying the Password

An Alternative to Transformable: Data Protection Summary

Chapter 8: Talking to Services: iCloud and Dropbox

Integrating with iCloud

Using iCloud’s Ubiquity Container Synching Content

Integrating with Dropbox Datastore API

Setting Up the API Access Creating a Blank App to Use with Dropbox Configuring the Callback URL Linking to Dropbox Using the Datastore API Creating and Synching Data with the Dropbox API

Using Core Data with the Dropbox Datastore API: ParcelKit

Adding the Required Frameworks for Dropbox and ParcelKit Integrating DropboxEvents with Dropbox

Conclusion

Chapter 9: Tuning Performance, Memory Usage, and Multithreading

Tuning Performance

Building the Application for Testing Running Your First Test Faulting Prefetching Caching Expiring the Cache Uniquing Improve Performance with Better Predicates Analyzing Performance

Dealing with Multiple Threads

Thread Safety Oh Come On, What Could Possibly Go Wrong? Gratuitous User Interface Initializing the Stack on a Different Thread

Summary

Index

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